* pci/host-vmd:
  iommu/vt-d: Prevent VMD child devices from being remapping targets
  x86/PCI: Use is_vmd() rather than relying on the domain number
  x86/PCI: Move VMD quirk to x86 fixups
  MAINTAINERS: Add Jonathan Derrick as VMD maintainer
  PCI: vmd: Remove IRQ affinity so we can allocate more IRQs
  PCI: vmd: Free up IRQs on suspend path
  PCI: vmd: Assign vector zero to all bridges
  PCI: vmd: Reserve IRQ pre-vector for better affinity

* pci/host-tegra:
  PCI: tegra: Explicitly request exclusive reset control

* pci/host-spear13xx:
  PCI: spear13xx: Fix platform_get_irq() error handling

* pci/host-rockchip:
  PCI: rockchip: Fix platform_get_irq() error handling
  PCI: rockchip: Umap IO space if probe fails
  PCI: rockchip: Remove IRQ domain if probe fails
  PCI: rockchip: Disable vpcie0v9 if resume_noirq fails
  PCI: rockchip: Clean up PHY if driver probe or resume fails
  PCI: rockchip: Factor out rockchip_pcie_deinit_phys()
  PCI: rockchip: Factor out rockchip_pcie_disable_clocks()
  PCI: rockchip: Factor out rockchip_pcie_enable_clocks()
  PCI: rockchip: Factor out rockchip_pcie_setup_irq()
  PCI: rockchip: Use gpiod_set_value_cansleep() to allow reset via expanders
  PCI: rockchip: Use PCI_NUM_INTX
  PCI: rockchip: Explicitly request exclusive reset control
  dt-bindings: phy-rockchip-pcie: Convert to per-lane PHY model
  dt-bindings: PCI: rockchip: Convert to per-lane PHY model
  arm64: dts: rockchip: convert PCIe to use per-lane PHYs for rk3339
  PCI: rockchip: Idle inactive PHY(s)
  phy: rockchip-pcie: Reconstruct driver to support per-lane PHYs
  PCI: rockchip: Add per-lane PHY support
  PCI: rockchip: Factor out rockchip_pcie_get_phys()
  PCI: rockchip: Control optional 12v power supply
  dt-bindings: PCI: rockchip: Add vpcie12v-supply for Rockchip PCIe controller

* pci/host-rcar:
  PCI: rcar: Add device tree support for r8a7743/5
  PCI: rcar: Fix memory leak when no PCIe card is inserted
  PCI: rcar: Fix error exit path

* pci/host-qcom:
  PCI: qcom: Add support for IPQ8074 PCIe controller
  dt-bindings: PCI: qcom: Add support for IPQ8074
  PCI: qcom: Use block IP version for operations
  PCI: qcom: Explicitly request exclusive reset control
  PCI: qcom: Use gpiod_set_value_cansleep() to allow reset via expanders

* pci/host-mvebu:
  PCI: mvebu: Remove unneeded gpiod NULL check

* pci/host-mediatek:
  PCI: mediatek: Use PCI_NUM_INTX
  PCI: mediatek: Add MSI support for MT2712 and MT7622
  PCI: mediatek: Use bus->sysdata to get host private data
  dt-bindings: PCI: Add support for MT2712 and MT7622
  PCI: mediatek: Add controller support for MT2712 and MT7622
  dt-bindings: PCI: Cleanup MediaTek binding text
  dt-bindings: PCI: Rename MediaTek binding
  PCI: mediatek: Switch to use platform_get_resource_byname()
  PCI: mediatek: Add a structure to abstract the controller generations
  PCI: mediatek: Rename port->index and mtk_pcie_parse_ports()
  PCI: mediatek: Use readl_poll_timeout() to wait for Gen2 training
  PCI: mediatek: Explicitly request exclusive reset control

* pci/host-layerscape:
  PCI: layerscape: Add support for ls1088a
  PCI: layerscape: Add support for ls2088a
  PCI: artpec6: Stop enabling writes to DBI read-only registers
  PCI: layerscape: Remove unnecessary class code fixup
  PCI: dwc: Enable write permission for Class Code, Interrupt Pin updates
  PCI: dwc: Add accessors for write permission of DBI read-only registers
  PCI: layerscape: Disable outbound windows configured by bootloader
  PCI: layerscape: Refactor ls1021_pcie_host_init()
  PCI: layerscape: Move generic init functions earlier in file
  PCI: layerscape: Add class code and multifunction fixups for ls1021a
  PCI: layerscape: Move STRFMR1 access out from the DBI write-enable bracket
  PCI: layerscape: Call dw_pcie_setup_rc() from ls_pcie_host_init()

* pci/host-kirin:
  PCI: kirin: Constify dw_pcie_host_ops structure

* pci/host-keystone:
  PCI: keystone: Use PCI_NUM_INTX
  PCI: keystone: Remove duplicate MAX_*_IRQS defs
  PCI: keystone-dw: Remove unused ks_pcie, pci variables

* pci/host-iproc:
  PCI: iproc: Clean up whitespace
  PCI: iproc: Rename PCI_EXP_CAP to IPROC_PCI_EXP_CAP
  PCI: iproc: Add 500ms delay during device shutdown
  PCI: iproc: Work around Stingray CRS defects
  PCI: iproc: Factor out memory-mapped config access address calculation
  PCI: iproc: Remove unused struct iproc_pcie *pcie

* pci/host-imx6:
  PCI: imx6: Explicitly request exclusive reset control

* pci/host-hv:
  PCI: hv: Do not sleep in compose_msi_msg()

* pci/host-hisi:
  PCI: hisi: Constify dw_pcie_host_ops structure
  PCI: hisi: Remove unused variable driver

* pci/host-faraday:
  PCI: faraday: Use PCI_NUM_INTX
  PCI: faraday: Fix of_irq_get() error check

* pci/host-exynos:
  PCI: exynos: Fix platform_get_irq() error handling

* pci/host-dra7xx:
  PCI: dra7xx: Fix platform_get_irq() error handling
  PCI: dra7xx: Propagate platform_get_irq() errors in dra7xx_pcie_probe()
  PCI: dra7xx: Use PCI_NUM_INTX

* pci/host-designware:
  PCI: dwc: Clear MSI interrupt status after it is handled, not before
  PCI: qcom: Allow ->post_init() to fail
  PCI: qcom: Don't unroll init if ->init() fails
  PCI: dwc: designware: Handle ->host_init() failures
  PCI: dwc: designware: Test PCIE_ATU_ENABLE bit specifically
  PCI: dwc: designware: Make dw_pcie_prog_*_atu_unroll() static

* pci/host-artpec6:
  PCI: artpec6: Fix platform_get_irq() error handling

* pci/host-armada:
  PCI: armada8k: Fix platform_get_irq() error handling
  PCI: armada8k: Check the return value from clk_prepare_enable()

* pci/host-altera:
  PCI: altera: Fix platform_get_irq() error handling
  PCI: altera: Use size=4 IRQ domain for legacy INTx
  PCI: altera: Remove unused num_of_vectors variable

* pci/host-aardvark:
  PCI: aardvark: Use PCI_NUM_INTX

* pci/irq-intx:
  PCI: Add pci_irqd_intx_xlate()
  PCI: Move enum pci_interrupt_pin to linux/pci.h

When platform_get_irq() fails we should propagate the real error value
instead of always returning -EINVAL.
Signed-off-by: NFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Cc: Shawn Lin <shawn.lin@rock-chips.com>

platform_get_irq() returns a negative number on failure, so adjust the
logic to detect such condition and propagate the real error value on
failure.
Signed-off-by: NFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Cc: Ley Foon Tan <lftan@altera.com>

platform_get_irq() returns a negative number on failure, so adjust the
logic to detect such condition and propagate the real error value on
failure.
Signed-off-by: NFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Cc: Pratyush Anand <pratyush.anand@gmail.com>

platform_get_irq() returns a negative number on failure, so adjust the
logic to detect such condition and propagate the real error value on
failure.
Signed-off-by: NFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Acked-by: NNiklas Cassel <niklas.cassel@axis.com>

platform_get_irq() returns a negative number on failure, so adjust the
logic to detect such condition and propagate the real error value on
failure.
Signed-off-by: NFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

When platform_get_irq() fails we should propagate the real error value
instead of always returning -EINVAL.
Signed-off-by: NFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Acked-by: NKishon Vijay Abraham I <kishon@ti.com>

platform_get_irq() returns a negative number on failure, so adjust the
logic to detect such condition and propagate the real error value on
failure.
Reported-by: NBjorn Helgaas <helgaas@kernel.org>
Signed-off-by: NFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Acked-by: NJingoo Han <jingoohan1@gmail.com>

Use tabs (not spaces) for indentation.  No functional change intended.
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

PCI_EXP_CAP is an iProc-specific value, so rename it to IPROC_PCI_EXP_CAP
to make it obvious that it's not related to the generic values like
PCI_EXP_RTCTL, etc.  No functional change intended.
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

During soft reset (e.g., "reboot" from Linux) on some iProc-based SOCs, the
LCPLL clock and PERST both go off simultaneously.  This seems in accordance
with the PCIe Card Electromechanical spec, r2.0, sec 2.2.3, which says the
clock goes inactive after PERST# goes active, but doesn't specify how long
the clock should be valid after PERST#.

However, we have observed that with the iProc Stingray, some Intel NVMe
endpoints, e.g., the P3700 400GB series, are not detected correctly upon
the next boot sequence unless the clock remains valid for some time after
PERST# is asserted.

Delay 500ms after asserting PERST# before performing a reboot.  The 500ms
is experimentally determined.
Signed-off-by: NOza Pawandeep <oza.oza@broadcom.com>
[bhelgaas: changelog, add spec reference, fold in iproc_pcie_shutdown()
export from Arnd Bergmann <arnd@arndb.de>]
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: NRay Jui <ray.jui@broadcom.com>
Reviewed-by: NScott Branden <scott.branden@broadcom.com>

VMD child devices must use the VMD endpoint's ID as the requester.  Because
of this, there needs to be a way to link the parent VMD endpoint's IOMMU
group and associated mappings to the VMD child devices such that attaching
and detaching child devices modify the endpoint's mappings, while
preventing early detaching on a singular device removal or unbinding.

The reassignment of individual VMD child devices devices to VMs is outside
the scope of VMD, but may be implemented in the future. For now it is best
to prevent any such attempts.

Prevent VMD child devices from returning an IOMMU, which prevents it from
exposing an iommu_group sysfs directory and allowing subsequent binding by
userspace-access drivers such as VFIO.
Signed-off-by: NJon Derrick <jonathan.derrick@intel.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

Use the is_vmd() predicate to identify devices below a VMD host rather than
relying on the domain number.
Signed-off-by: NJon Derrick <jonathan.derrick@intel.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

VMD currently only exists for Intel x86 products, so move the VMD quirk to
arch/x86.
Signed-off-by: NJon Derrick <jonathan.derrick@intel.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

Add Jonathan Derrick as VMD maintainer.
Signed-off-by: NJon Derrick <jonathan.derrick@intel.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Acked-by: NKeith Busch <keith.busch@intel.com>

VMD hardware has to share its vectors among child devices in its PCI
domain so we should allocate as many as possible rather than just ones
that can be affinitized.

pci_alloc_irq_vectors_affinity() limits the number of affinitized IRQs to
the number of present CPUs (see irq_calc_affinity_vectors()).  But we'd
prefer to have more vectors, even if they aren't distributed across the
CPUs, so use pci_alloc_irq_vectors() instead.
Reported-by: NBrad Goodman <Bradley.Goodman@dell.com>
Signed-off-by: NKeith Busch <keith.busch@intel.com>
[bhelgaas: add irq_calc_affinity_vectors() reference to changelog]
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

Add internal PCI bridge support for r8a7743/5 SoC.  The Renesas RZ/G1[ME]
(R8A7743/5) internal PCI bridge is identical to the R-Car Gen2 family.

This doesn't change the driver, so it does nothing by itself.  But it does
mean that checkpatch won't complain about a future patch that adds
"renesas,pci-r8a7743" to a DT, which helps ensure that shipped DTs use
documented compatibility strings.
Signed-off-by: NBiju Das <biju.das@bp.renesas.com>
[bhelgaas: add explanatory note]
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Acked-by: NSimon Horman <horms+renesas@verge.net.au>